Improved boat-detaching tackle



@ui-teh taies ings-tent @ffice THOMAS M. RASEE AND THOMASA J. RASER., OFPHILADELPHIA, PENN- SYLVANIA.

' Lener@ Patent No. 67,137, daad Juzg 2e, 1867.

IMPROVBD BOAT-DETACHING TAGKLE.

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Be it known that we, THOMAS M. RASEE and THOMAS J. RASEE, both of Philadelphia, in the county of Philadelphia, and State of Pennsylvania, have invented a new andl useful' Improvement in Self-Detaching Davit- Hooks for lowering boats from vessels; and we do herebydeclare that the followingis a full, clear, and exact description thereof,'ret`erence being had to the accompanying drawings, and to the letters of reference marked thereon. I I j The object of our invention is to provide a hook `for loweringboats which will automatically detach itself as soon as the boat reaches the water, and thus obviate the danger of the boats swamplng by reason of not being released at the proper time. In the accompanying drawings- Figure 1 represents a side elevation of our hook when closed, and sustaining the weight of the boat sus pended thereto; and y Figure 2 represents the same when open, after it has been detached from the boat.

A and A are the two jaws of the hooks, pivoted together at a. These jaws arejonted together by means of a tenen, t, on A', entering an open mortise or slot in A. B is a shackle attached by same pivot a, on which 'the two jaws of the hook turn. bis a spring to open the hook and keep it open when no weight is attached, and t the pinfnot inserted to keep it closed. This spring passes through the mortise or slot in A, the lower end of i which slot is indicated by a dotted line, s. .c is a latch-spring, with catch c to' hold the ends of jaws A A together when the boat is suspended by the hooks. d is a tongue on the end of one of the jaws, which fits into 'a corresponding groove, d', in the end ofthe opposite jaw. e is a catch on Athe tongue d, which engages with the catch on the end of the latch-spring when the hook is closed, and a sudicient weight bearing on said latchspringto press it down. fis a pin suspended to the shackle by a chain, which may be inserted through both jaws of the hook,` as shown in iig. 1, to keep the hook closed when not in use in lowering the boat. z'is a checkpin, firmly-fixed in one ofthe jaws of the hook, and projecting into a curvedgroovdj, in the other jaw, the i said' groove being so made as to limit the spread of the hook. g is a guard-platelon each side of the tongue d, and rising up flush with the catch e, to prevent the ring or link into which thc hook engages from being caught or detained by said catch e when the hook opens.

It will be seen that when the hook is closed, as shown in iig. 1, and the boat suspended by it, the ring or link with which the hook engages will press down the latch-spring c, and cause its catch c to engage with the catch e on the tongue of the oppositejaw, thus holding the two jaws of the hook rmly together. But as soon as the boat rests upon the water, the pressure upon the latch-spring c will be relieved, and the spring will rise, 'disengaging the catch e, when the spring b will immediately throw the jaws' of the hook asnder and release the boat. i

Having thus described our invention, whatwe claim as new, and desire to secure by Letters Patent, is- I. In combination with the two jaws of the hook, pivoted together as described, .the spring I), latch-spring b c, with its catch c,tongue d, with its catch e, and the groove cl', all constructed and operating substantially as i described.

2. In combination with a hook constructed and operating as above described, I claim the pin f, as and for s the purpose described.

3. In combination with a hook constructed and operating as described, I claim the check-pin z' and groove j, as and for the purpose described.

Y 4. In combination with the tongue d and groove d', I claim the guard-plates g on each side of the tongue, I" Y arranged and operating as and for the purpose described.

THOMAS M. RASEE, Witnesses: THOMAS J. RASEE. f j J. J. CooMBs, i

Jos. L. Goonies. 

